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Digital TV and control method thereof

a digital tv and control method technology, applied in the direction of picture reproducers using projection devices, signal generators with optical-mechanical scanning, television systems, etc., can solve the problem of not providing the correct epg to the digital tv

Inactive Publication Date: 2007-04-12
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] Accordingly, it is an aspect of the present invention to provide a digital TV which is c

Problems solved by technology

If a broadcasting station provides erroneous time information to a digital TV, there may occur a problem in operation of the digital TV for the process of the reservation or time information and a problem in that a correct EPG may not be provided to the digital TV.

Method used

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  • Digital TV and control method thereof
  • Digital TV and control method thereof
  • Digital TV and control method thereof

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first embodiment

[0021]FIG. 1 is a control block diagram of a digital TV according to the present invention. As shown in FIG. 1, a digital TV according to this embodiment includes a tuner 10, a controller 20 and a display 30.

[0022] The digital TV receives broadcasting signals of various frequency bands from a plurality of broadcasting signal sources, commonly, broadcasting stations.

[0023] The tuner 10 tunes broadcasting signals corresponding to all channels when the digital TV is powered on. In general, when the digital TV is powered on, only a broadcasting signal corresponding to a channel set before the digital TV is powered off, is tuned. However, the tuner 10 according to this embodiment of the present invention tunes broadcasting signals corresponding to all channels in order to read time information on all channels.

[0024] As shown in FIG. 1, a plurality of broadcasting signals received in the tuner 10 via respective channels contains respective time information, which may be equal to or diff...

second embodiment

[0032]FIG. 3 is a control flow chart illustrating a control method of the digital TV according to the present invention.

[0033] First, when the digital TV is powered on, the tuner 10 tunes broadcasting signals corresponding to a plurality of channels at operation S10. The erroneous channel detector 40 reads time information contained in the tuned broadcasting signals for respective channels at operation S20 and makes a comparison between a plurality of pieces of read time information to determine whether or not differences therebetween fall outside a predetermined range at operation S30. If the differences fall within the predetermined range, functions of the erroneous channel detector 40 and the controller 50 are stopped.

[0034] On the other hand, if the differences fall outside the predetermined range, the erroneous channel detector 40 determines that a channel that receives time information outside the predetermined range is an erroneous channel. This erroneous channel is stored i...

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Abstract

A digital TV for receiving broadcasting signals containing time information for respective channels, the digital TV including a tuner for tuning the broadcasting signals corresponding to the respective channels; and a controller for reading the time information contained in the tuned broadcasting signals for the respective channels and detecting an erroneous channel that receives erroneous time information, based on a plurality of pieces of read time information. Thus, the present invention provides a digital TV which is capable of correcting erroneous time information received therein, and a control method thereof.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit under 35 U.S.C.§119 of Korean Patent Application No. 2005-0094553, filed on Oct. 7, 2005, the entire disclosure of which is hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] Apparatuses and methods consistent with the present invention relate to a digital TV and control method thereof, and more particularly, to a digital TV for processing digital broadcasting signals containing real-time information, and control method thereof. [0004] 2. Description of the Related Art [0005] In general, a digital TV compresses and transmits digital video signals, digital audio signals, and digital data signals containing PSIP (Program and System Information Protocol), EPG (Electronic Program Guide) and so on. [0006] In addition, the digital data signal contains time information provided from a broadcasting station that supplies a broadcasting signal. This time inform...

Claims

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Application Information

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IPC IPC(8): H04N11/00H04N5/44
CPCH04N5/4401H04N5/50H04N21/4382H04N21/435H04N19/89H04N21/426H04N5/44H04N5/445
Inventor SOHN, JIN-HEELIM, YOUNG-SIL
Owner SAMSUNG ELECTRONICS CO LTD